The Talisman of Charlemagne: New Historical and Gemological Discoveries. Published in Gems & Gemology, 2019, 55(1), 30-46.
Sapphires Heated with Pressure – A Research Update. Published in InColor, Spring 2019, 86-90.
2010 Swiss Gemmological Conference presentation by Jean-Pierre Chalain on diamond grading and testing practices at the Swiss Gemmological Institute (SSEF).
Origin Determination of Gemstones: Challenges and Perspectives. Published in GIT Proceedings, 2006.
Author(s): M.S. Krzemnicki, H.A. Haenni, P. Lefevre, J.-P. Chalain
Three historical asteriated hydrogen rich diamonds: growth history and sector-dependent impurity incorporation. Published in Diamonds & related materials, 2004.
Author(s): B. Rondeau, E. Fritsch, M. Guiraud, J.-P. Chalain, F. Notari
Pezzottaite, a new mineral and gem. Published in Journal of Gemmology, 2004.
Author(s): H.A. Haenni, M.S. Krzemnicki
Element mapping of trapiche rubies. Published in Journal of Gemmology, 1999.
Author(s): K. Schmetzer, Z. Beili, G. Yan, H.-J. Bernhardt, H.A. Haenni
Raman Investigations on Two Historical Objects from Basel Cathedral: The Reliquary Cross and Dorothy Monstrance. Published in Gems & Gemology, 1998, 34(2), 102-125.
Distinction of taaffeite and musgravite. Published in Journal of Gemmology, 1998.
Author(s): L. Kiefert, K. Schmetzer
Short notes on some gemstone treatments. Published in GAHK Journal, 1998.
Author(s): H.A. Haenni